pub struct Holder<T, S>(_, _);
Expand description
Helper type allowing implementation of trait object for generic types
multiple times. In practice this type is never used
Wraps type into a holder to apply necessary blanked implementations.
Returns a reference to the wrapped type.
Immutably borrows from an owned value.
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Mutably borrows from an owned value.
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Returns the argument unchanged.
Calls U::from(self)
.
That is, this conversion is whatever the implementation of
From<T> for U
chooses to do.
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.